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-rw-r--r--changes/bug55985
-rw-r--r--doc/tor.1.txt2
-rw-r--r--src/or/config.c2
3 files changed, 7 insertions, 2 deletions
diff --git a/changes/bug5598 b/changes/bug5598
new file mode 100644
index 0000000000..e8e67415bd
--- /dev/null
+++ b/changes/bug5598
@@ -0,0 +1,5 @@
+ o Changed defaults:
+ - Change the default value for DynamicDHGroups to 0. This feature can
+ make Tor relays less identifiable by their use of the mod_ssl DH
+ group, but at the cost of some usability (#4721) and bridge tracing
+ (#6087) regressions. Resolves ticket #5598.
diff --git a/doc/tor.1.txt b/doc/tor.1.txt
index 00371c380a..f5e5b86c29 100644
--- a/doc/tor.1.txt
+++ b/doc/tor.1.txt
@@ -266,7 +266,7 @@ Other options can be specified either on the command-line (--option
If this option is set to 1, when running as a server, generate our
own Diffie-Hellman group instead of using the one from Apache's mod_ssl.
This option may help circumvent censorship based on static
- Diffie-Hellman parameters. (Default: 1).
+ Diffie-Hellman parameters. (Default: 0).
**AlternateDirAuthority** [__nickname__] [**flags**] __address__:__port__ __fingerprint__ +
diff --git a/src/or/config.c b/src/or/config.c
index 090d96c155..cf6ae84b1a 100644
--- a/src/or/config.c
+++ b/src/or/config.c
@@ -257,7 +257,7 @@ static config_var_t _option_vars[] = {
V(DisableAllSwap, BOOL, "0"),
V(DisableDebuggerAttachment, BOOL, "1"),
V(DisableIOCP, BOOL, "1"),
- V(DynamicDHGroups, BOOL, "1"),
+ V(DynamicDHGroups, BOOL, "0"),
V(DNSPort, LINELIST, NULL),
V(DNSListenAddress, LINELIST, NULL),
V(DownloadExtraInfo, BOOL, "0"),